442303985 has 8 divisors (see below), whose sum is σ = 539466216. Its totient is φ = 348042240.

The previous prime is 442303973. The next prime is 442303987. The reversal of 442303985 is 589303244.

It can be written as a sum of positive squares in 4 ways, for example, as 1024 + 442302961 = 32^2 + 21031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442303985 - 2¹⁸ = 442041841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442303987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724784 + ... + 725393.

It is an arithmetic number, because the mean of its divisors is an integer number (67433277).

Almost surely, 2^442303985 is an apocalyptic number.

It is an amenable number.

442303985 is a deficient number, since it is larger than the sum of its proper divisors (97162231).

442303985 is a wasteful number, since it uses less digits than its factorization.

442303985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450243.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 442303985 is about 21031.0243450004. The cubic root of 442303985 is about 761.9157491648.

The spelling of 442303985 in words is "four hundred forty-two million, three hundred three thousand, nine hundred eighty-five".